Dataset: Seawater temperature at Yawzi Point (1991-2021)

Name: Daily seawater temperature at Yawzi Point (St.John USVI) from 1991-2021
Published: 2022-06-15
Keywords: seawater temperature, Caribbean, US Virgin Islands, climatologyMeteorologyAtmosphere, oceans

Cite This Dataset

DOI:10.26008/1912/bco-dmo.875694.1

Spatial Extent: N:18.3153 E:-64.7257 S:18.3153 W:-64.7257

Temporal Extent: 1991-01-01 - 2021-07-18

Project:

RUI: Pattern and process in four decades of change on Caribbean reefs (St John Coral Reefs)

Principal Investigator:

Peter J. Edmunds (California State University Northridge, CSUN)

BCO-DMO Data Manager:

Dana Stuart Gerlach (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2022-06-15

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Daily seawater temperature at Yawzi Point (St.John USVI) from 1991-2021

Abstract:

These data describe seawater temperature in Great Lameshur Bay from 1991-2021. They are daily averages from temperature logger measurements made at Yawzi Point, St.John USVI.

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Archival Copy

Version Date	Archive	Persistent Identifier (PID)	Date PID Issued
2022-06-15	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.26008/1912/bco-dmo.875694.1	2022-06-17

Methods & Sampling

Seawater temperature was measured daily for 30 years in Great Lameshur Bay at a depth of ~9 meters. Loggers were located at Yawzi Point, ~900 meters from Cabritte Horn (the location of photoquadrat sampling). The loggers sampled at 0.0011Hz (Onset Computer Corp., HOBO U22-011, ± 0.2°C) or every 15 minutes (Edmunds & Gray, 2014). Records were collapsed by day and used to calculate annual summaries of mean temperature (this dataset), minimum temperature, maximum temperature, the number of hot days (i.e.,>29.3 °C), and the number of cold days (i.e.,≤26.0 °C).

For details on association with Millepora morphology, see Related Datasets section below.

Data Processing Description

Problem report: If data was missing from Yawzi Point, the seawater temperature values from the Tektite site location (~14 meters depth), were used instead. This depth difference has a negligible effect on the temperature at this location.

BCO-DMO processing
- added columns for latitude and longitude
- converted Date to YMD format
- added columns for site and location
- added conventional header with dataset name, PI name, version date
- modified parameter names to conform with BCO-DMO naming conventions

Data Files

File
temperature.csv (Comma Separated Values (.csv), 632.67 KB) MD5:11f625b3920f53180bf52bca0932a775 Primary data file for dataset ID 875694

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-2019992

Deployments

None available yet

Instruments

Onset HOBO Pro v2 temperature logger

Supplied Name: Hobo U22-001 (Onset Computer Corp.)

Supplied Description:

Seawater temperature was measured with loggers (mostly Onset Computer Corp., Hobo U22-001, ± 0.2°C).

Instrument Type

Generic Name: Onset HOBO Pro v2 temperature logger

Acronym: HOBO U22-001

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/134/

Generic Description:

The HOBO Water Temp Pro v2 temperature logger, manufactured by Onset Computer Corporation, has 12-bit resolution and a precision sensor for ±0.2°C accuracy over a wide temperature range. It is designed for extended deployment in fresh or salt water.

Operation range: -40° to 70°C (-40° to 158°F) in air; maximum sustained temperature of 50°C (122°F) in water
Accuracy: 0.2°C over 0° to 50°C (0.36°F over 32° to 122°F)
Resolution: 0.02°C at 25°C (0.04°F at 77°F)
Response time: (90%) 5 minutes in water; 12 minutes in air moving 2 m/sec (typical)
Stability (drift): 0.1°C (0.18°F) per year
Real-time clock: ± 1 minute per month 0° to 50°C (32° to 122°F)

Additional information (http://www.onsetcomp.com/)
Onset Computer Corporation
470 MacArthur Blvd
Bourne, MA 02532

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
Latitude	Latitude	decimal degrees	lat
Longitude	Longitude	decimal degrees	lon
Date	Date of temperature measurements Format: %Y-%m-%d	unitless	date
Mean_daily_temp	Seawater temperature	degrees Celsius (°C)	temp
Site	Site of seawater sampling	unitless	site
Location	Geographical location	unitless	region

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Database

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Dataset: Seawater temperature at Yawzi Point (1991-2021)